package cn.linjianhui.thread.volatiles;

public class IntegerPlusThread {
    public static volatile int i = 0;
    static  Object lock = new Object();
    public static class PlusTask implements Runnable {

        @Override
        public void run() {
            for (int k = 0; k < 10000; k++)
                synchronized (lock) {
                    i++;
                }
        }
    }

    public static void main(String[] args) throws InterruptedException {

        Thread[] threads = new Thread[10];
        for(int i = 0; i < 10; i++) {
            threads[i] = new Thread(new PlusTask());
            threads[i].start();
        }

        for(int i = 0; i < 10; i++) {
            threads[i].join();
        }

        System.out.println(i);
    }
}
